Glassware forming machine



1931- J. E. M LAUGHLIN GLASSWARE FORMING MACHINE Filed July 10, 1929 3 Sheets-Sheet l Nov. 17, 1 3 J. E. M LAUGHLIN GLASSWARE FORMING MACHINE Filed July 10, 1929 3 Sheets-Sheet 2 NOV. 17, 1931. MCLAUGHLIN 1,832,814

GLASSWARE FORMING MACHINE Filed July 10. 1929 3 Sheets-Sheet 3 stroke.

Patented Nov. 17, 1931 UNITED. STATES PATENT OFFICE 301m 1'. ucniuennir, or renew, omo, ASSIGNOR r0 owns-armors emss comrmmr, or TQLEDO, onro, A coaromrron or or'no GLASSWARE FORMING MACHINE Applicationflled m 10, 1929. Serial at. 877,188.

My invention relates toimprovements in glassware forming machines and more particularly to cutofi' or charge severing mechanism for separating charges of glass in the molds from the supply body of molten glass.

An object is to provide means for imparting to the cutting edge of a charge severing knife, a movement transverse to its usual direction of advance to an operative position 10 relative to one end of a mold to thereby obtain uniform andexceptionally clean severance of the lass. o

Another 0 ject is to provide means whereby such movement of the knife as that above referred to may be effected prior to or during actual severance of the glass.

A further object is to provide means whereby a different ortion of the cutting edge of a knife may presented at each cuttin Thus, unsatisfactory severance o theglass may well be reduced to a minimum.

Other objects will be in part apparentand in part pointed out hereinafter.

Inithe drawings: Fig. 1 is a fragmentary sectional elevation illustrating one embodiment of my invention.

Fig. 2 is a detail side elevation showing the cutofioperatively positioned beneath a suction type blank mold.

Fig. 3 is a sectional elevation showing the connection between the cutter and closure plate.

Fig. 4 is a plan view with parts in section, showing a part of the cutter reciprocating mechanism. a

Fig. 5 is a view similar to Fig. 4, showing a slightly modified form of means for reciprocating the cutter. v

, Fig. 6 is a detail sectional elevation of mechanism which may be substituted for the motor shown in Fig. 1, for the purpose of actuating the cutter.

Figs. 7 to 13 illustrate a modified form of cutter.

Figs. 7 and 8 are side and front elevations, respectively, ofthisiform: of cutter.

Fig. 9 is a detail sectional elevation there- Figs. 10 and 11 are detail plap views showing the cutofi in two different positions.

Fig. 12 is a side elevation of the cutter and operating mechanism therefor.

Fig. 13 is a vertical sectional view thereof.

In the drawings, Figs. 1 to 4 iuclusive, the cutoflf mechanism is illustrated in connection with a bottle blowing machine including a suction gathering blank mold 15 'and a neck mold 16, both of said molds being supported on 'avertical hinge pin 17 connected through a slide 18 to .a frame 19 which constitutes a portion of a rotary mold carriage. The cutoff mechanism is for the greater art sup.- ported on a bracket 20 extending r ially outward from and secured to said frame 19 at a point above the hinge pin slide 18.

The cutoff includes a cutter 21 adapted to move transversely of the path of advance of the closure plate 22 and cutter across the lower end of the mold 15 in order to provide a shearing or drawing cut 'in the glass con: necting the mold charges and supply body of molten glass. This is accomplished by providing a-- closure plate 22 with an undercut slideway 23 adjacent its forward edge and slidingly mounting the cutter or blader21 therein. The outer margin of this cutter (Fig. 3) is suitably tapered or beveled to provide a sharp cutting edge 24. The closure plate 22, and incidentally said cutter 21, are connected to the bracket 20 by a cutoff arm 25 and a tubular rock shaft 26, thelatter journaled for-rotation in a vertical bearing 27 at the outer end of said bracket 20. The vertical spaced relation between the closure plate 22 and the mold 15 is controlled and regulated by mechanism including a yoke 28 (Fig. 1) engaging a grooved collar 29 on the shaft 26, said yoke pivoted to the bracket 20 and connected through an arm 30 and rod 31 to a cam actuated slide 32, the latter being movable radially at regular time interyals by a stationary cam 33. Immediately following complete filling of the blank mold 15, suitable mechanism (not shown) lifts the mold a short distance above the surface of the supply body of molten glass so that the cutoff may be swung laterally across the bottom of the mold to sever the mold charge from the supply body and temporarily close the mold. Such lateral movement of the cutoff is obtained by means of rack and pinion mechanism 34 at the upper end of the tubular shaft 26, said mechanism actuated by a slide 35 which is reciprocated at regular time intervals by a stationary cam 36.

The cutter 21 or blade, as indicated above, is adapted to be reciprocated quite rapidly during the charge severing operation in order to obtain an exceptionally clean cut which almost, if not entirely, eliminates the presence of strings of glass on the bottoms of the blanks. Such reciprocation of the cutter 21 is obtained by a mechanism (Figs. 1, 2 and 4) including a shaft 37 rotatively supported in the tubular shaft 26 and extending beyond both ends of the latter. The lower end of this shaft 37 carries an eccentric 38 including an eccentric collar 38 and an eccentric strap 38 pivotally connected to one end of the cutter 21 through arod 39. This shaft 37 is rapidly rotated at regular time intervals by means of an electric motor 40 supported upon a base 41 on the. upper side of the bracket 20, said motor operating through a pinion 42 and bevel gear 43. The bevel gear 43 is splined to the upper portion of the shaft 37 (Fig. 1) above a shaft bearing 44 so that both said shafts 26 and 37 may be reciprocated vertically as a unit without interfering with the gears 42 and 43. The motor 40 is operated periodically by the closing of a switch 45 including a pivoted switch arm 46 which is actuated by a stationary cam 47 substantially at the time the cutoff advances toward the charge severing position. Condu tors 48 1) connect the motor 40 and switch 45 to a junction box 49 which in turn is suitably connected to a source of electric energy (not shown).

In operation, the blank mold 15 gathers a charge of glass and is then raised to the position shown in Fig. 2 and while in such position the cutoff arm 25 is swung to move the cutter 21 and closure plate 22 laterally across the lower end of the blank mold. During advance of the cutoff toward the charge severing position in a path about the axis of the rock shaft 26, the switch 45 is closed so that the motor 40 is operated and thereby imparts rotary movement to the ec centric collar 38 This eccentric collar 38* operates through the strap 38 and rod 39 (Fig. 4) to reciprocate said cutter at a speed determined by the speed of operation of the motor 40.

In Fig. 5, I have shown another form of connection between the cutter 21 and the eccentric strap 38*, whereby the stroke of the cutter may be varied in length. This is acc0mplished by providing a lever 50 which is pivoted to the arm 25, said lever having one end pivoted to the cutter 21. The otherend of the lever is provided with a series of'openings 51 so that the connector rod 39 may be pivoted to the lever at any one of several points at one side of the connection between the lever 50 and the arm 25.

Fig. 6 illustrates another form of mecha-.

nism for rotating the eccentric shaft 37. This form comprises a horizontal shaft 52 journaled in bearings 53, one end of said shaft carrying the bevel pinion 42 while its other end carries a bevel pinion 54 adapted for en gagement at regular time intervals with an form of cutter comprising a disk which may,

be rotated in a step-by-step fashion so that with each successive cutting stroke a new cutting edge is presented to the glass to be severed. In this form, the tubular rock shaft 26 is arranged at one side of the mold 15 and connected at its lower end to a cutoff arm 25, the latter having a closure plate 22 at its outer end. A disk cutter 56 having a vertical shaft 57 journaled in a bearing 58 is provided adi'acent one edge of the closure plate 22 (Figs. 11 and 12). The disk cutter is arranged with its upper surface in a plane with the upper surface of the plate 22 for obvious reasons, such arrangement being effected by cutting away a portion of the upper side of the plate 22 to provide a substantially semi-circular recess 59 in which approximately one-half of the cutter is at all times positioned. Step-by-step rotation of the cutter 56 is obtained by pawl and ratchet mechanism including a ratchet wheel 60 (Figs. 11, 12 and 13) keyed to the shaft 57 between the bearing 58 and a collar 61. A pawl 62 is pivoted to an arm 63 extending radially from said collar 61 and is adapted to engage the ratchet teeth under pressure of a spring 64. A washer and nut 71 hold this pawl and ratchet mechanism assembled. A: connector rod 65 is pivoted at one end to the arm 63 and at its other end is connected to an eccentric strap 66 which encircles an eccentric collar 67, the latter secured to the lower end of a non-rotating eccentric shaft 68 which extends lengthwise of and through the rock shaft 26. Spline connection between the eccentric shaft and the bearing (Figs. 7 and 8) holds said shaft against rotation.

In operating the cutoff just described, the rock shaft 26 is given a rotary movement by rack and pinion mechanism 34 (Fig. 7) to thereby swing the cutoff arm 25. and disk point after starting of the advancing movement of the cutter beneath the mold 15, the pawl 62 (Figs. 10 and 11) moves in a clockwise direction under influence of the eccentric and carries with it the ratchet wheel 60. Thus, the disk cutter may be rotated a predetermined distance either prior to or during actual severance of a charge of glass fromthe supply body. While the cutter is returning to its original position at oneside of the mold 15", the eccentric including the collar and strap 67 and 66, respectively, (Fig. 11), operates to move the pawl 62 in a counterclockwise direction about the shaft 57 and freely over the periphery of the ratchet wheel a distance corresponding to the space between adjacent ratchet teeth. Severance of the glass by a rapidly moving knife or by constantly changing cutting edges is quite advantageous, as pointed out above. a

Modifications other than those illustrated, may be resorted to within the spirit and scope of the appended claims.

What I claim is: v

1. In a glassware forming machine, the combination of a blank mold having an open end through which mold charges of molten .glass enter the mold, means to sever the glass in the mold from a supply body of molten glass, said severing means including a closure plate movable laterally across said end of the mold, a severing member on said plate, and means to move the severing member independently of and during lateral movement of said plate. I

2. In a glassware forming machine, the combination of a mold having an open end through which charges of molten glass-enter said -mold, a cutter, an arm on which the cutter is mounted, means to swing said arm and carry the cutter across said end of the mold, and means to concomitantly move the cutter on said arm in a direction transverse to the direction of movement of the -arm and thereby cause multi-directional movement of the cutter laterally acrosssaid one end of the mold to sever mold charges from a supply body of molten glass. 2

3. In a glassware forming machine, the combination of a mold having an open end through which charges of molten glass enter said mold, a closure plate, a cutter mounted for independent movement on said plate, means to move the plate and cutter laterally across said one end of thecmold, and automatic means to move the cutter independently of said plate at times. I

4. The ombination of a mold, a closure plate the efor, a cutter. mounted on said plate and movable relative thereto, said plate and cutter having their upper faces in, the same plane, means to move the plate and cutter as a unit toward a mold closing position,

and mechanism including a rock shaft and an eccentric to impart to the cutter during said movement, a movement of the cutter transverse to the direction of unitary movement of the plate and cutter.

' 5. In a glassware forming machine, the combination of a blank mold having an open end through which mold charges of molten glass enter the mold, charge severing means including a closure plate, a cutter movably I mounted 011 said plate, a rock shaft supporting the plate and cutter, means to rock said shaft to thereby move the plate and cutter laterally across the open end of the mold, and mechanism to impart movement to the cutter independent of the closure plate.

6. In a glassware forming machine, the combination of a blank mold having an open end through which mold charges of molten glass enter the mold, charge severing means including a closure plate, a cutter movably mounted 'on said plate, a rock shaft supporting the plate and cutter, means to rock said shaft to thereby move the plate and cutter laterally across the open end of the mold, an arm connecting the closure plate and rock shaft, and means in part carried by said arm and including an eccentric to actuate the cutter independently of the plate.

7. In a glassware forming machine, the combination of a blank mold having an open end through which mold charges of molten glass enter the mold, charge severing means including a closure plate, a cutter movably mounted on said plate. a rock shaft supporting-the plate and cutter. means to rock said shaft to thereby move the plate and butter laterally across the open end of the mold. an eccentric rock shaft within the first named rock shaft, an eccentric at the lower end of said eccentric shaft, connection between the eccentric and cutter, and means to cause such movement of the eccentric that the cutter is actuated independently of the plate.

8. In a glassware forming machine, the combination of a blank mold having an open end through which mold charges of molten glass enter the mold, charge severing means including a closure plate, a cutter movably mounted on said plate, a rock shaft supporting the plate and cutter, means to rock said shaft to thereby move the plate and cutter laterally across the open end of the mold, an eccentric rock shaft within the first named rock shaft, an eccentric at the lower. end of said eccentric shaft, connection between the eccentric and cutter, and means to impart rotary movement to the eccentric shaft to thereby actuate the cutter independently of the plate.

9. Cutoff mechanism including a closure mechanism operable to move the cutter relative to said plate, an eccentric shaft. an eccentric mounted on the shaft and connected to the cutter, and means to cause such relative movement between the plate and shaft that the pawl and ratchet mechanism is actuated to move the cutter relative to the plate.

11. Cutoff mechanism including a plate, a disk cutter thereon, means to impart unitary movement to the plate and cutter, and pawl and ratchet mechanism to impart rotary movement to the cutter relative to the plate.

12. Cutoff mechanism including a plate, a disk cutter thereon, means to impart unitary movement to the plate and cutter, and means actuated by unitary movement of the plate and cutter to rotate the latter relative to the plate.

13. Cutoff mechanism including a movable plate, a cutter thereon, and means to reciprocate the cutter relative to said plate.

14:. Gutott mechanism including a movable plate, a cutter thereon, means to reciprocate the cutter relative to said plate, and means to change the length of the stroke of said cutter.

15. The combination of a mold having an opening for the introduction of molten glass, a closure plate. a cutter thereon, means for moving said plate to mold closing position, and pawl and ratchet mechanism operable to move the cutter relative to said plate.

16. The combination of a mold havin an opening for the introduction of molten glass, a closure plate, means for moving said plate to mold closing position a disk cutter on said plate, and pawl and ratchet mechanism to impart rotarv movement to the cutter.

17. The combination of a mold having an opening for the introduction of molten glass, a closure plate, means for moving said' plate to a mold closing position, a cutter on said plate, and means for reciprocating the cutter relative to said plate.

Signed at Toledo, Ohio, this 5th day of July, 1929.

JOHN E- MeLAUGHLIN.

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